Filled-bag weighing and closing machine



y 2, 1929- N. v. CHRISTENSEN 1.719.651

FILLED BAG WEIGHING AND CLOSING MACHINE Filed Dec. 31, 1923 5Sheets-Sheet 1 l gwua 14 for.

y 2, 1929 N. VHCHRISTENSEN 1.719.651

FILLED BAG WEIGHING AND CLOSING MACHINE Filed Dec. 51, 1923 5Sheets-Sheet 2 i; J0 Q July 2, 1929. N. 'v. CHRISTENSEN,

FILLED BAG WEIGHING AND CLOSING MACHINE Y Filed Dec. 31, 1923 sSheets-Sheet 3 16'? will? i) v a J ly 1929. N. v. CHI QISTENSEN1.719.651 Y FILLED BAG WEIGHING AND CLOSING MACHINE Filed Dec. 31, 1925s sheets-snieeit 4 v Snu mu y 2, 9 N. v, CHRISTENSEN j 1.719.651

FILLED BAG WEIGHING AND'CLOSING MACfiINE Filed Dec. :51, 1925 'l 5Sheets-Sheet 5 I I. i

Y I 6H0:

Patented J uly 2, 1929.

uurrsof STAT-Es NORMAN V. CHRISTENSEN, OF CHICAGO, ILLINOIS, ASSIGNOR TOUNION SPECIAL IA- 1,719,651 T ;omen;

' CHINE COMPANY, OF CHICAGO; ILLINOIS, A CORPORATION OF ILLINOIS.

, FILLED-BAG WEIGHING AND CLOSING MACHINEL Application. filed December31, 1923,. Serial No. 683,691.

The invention relates to new and useful improvements in filled bagweighing and closing machines, and has for an object the associating ofa filled bag stitching machine and weighing scales in a single portableunitary structure.

A further object'of the invention is to provide a machine of theabovetypewherein the sewing head is so mounted that it may be moved in astraight line across the weighing platform of the scales and at suchdistance I above the same as to stitch the mouth of the which in turn issupported onasingle track disposed intermediate the sewing head and themotor and an auxiliary track is associated therewithto prevent thecarrier from tilting on its supporting track.

A still further object of the invention is to provide a machine of theabove type with a stationary threaded rod,-having a threadedsleevethereon, which threaded sleeve under the control. of theoperatormay be rotated in either direction, at will, from the motor, andutilized formoving the carrier back and forth.

A still further object of the invention is to provide a machine of theabove type wherein the track'for the sewing head is capable of beingadjusted toward and from the platform of 'th'escales so as to suitdifferent heights of filled bags.

Still another object of the invention is to provide a machine of theabove type with means for automatically reversing the feed of thecarrier after the sewing head has trav-' eled to a predetermined point.

Another object of the invention is'to provide a machine of the abovetype with an auxiliary table on which separate weighing scales may beplaced, if desired, and so positioned relative to the traveling sewinghead that small bags may be stitched. I These and other objects will inpart be obvious and will in fully disclosed. v

In the drawings which show by way of illustration one embodiment of theinvention- Figure 1 is a front View of a'machineem} i Fig. 5is'anenlarged sectional View of the controlling clutch/Ifor driving thecarrier back and forth; and

Fi '6 is a sectional view thr u Cari] bar and the stop block carriedthereby.

The invention is directed broadly to a machine for weighing andstitching a filled bag,

and of such a character that thestructu're 1sa unitary structure andportable so that, the machine may be quickly moved from one part .of themill to another, and willnot re- 7 qulre any setting up or adjustmentofthe parts for operation in its new setposition.

mounted on rollers or casterswhich enables the base to. bepushed aboutthemill; Rising from the supporting base are-two standards which supportthescalebeamand the scale 'beam'is' in turn connected to the weighingplatform. These standards extend .above the weighing. scale, and eachstandard is formed intwo parts, which are so connected that they may bereadily ad'usted relative to each other. i This is pre erablyfaccom-,plished by means of telescoping one part into the other andsupportingitby a threaded nut and providing means under the control of the soperator for simultaneously turnin threaded nuts on the two standards.

the

which project forwardlyand support a single rail on which ismounted-'acar'rier adapted to travel back and forth on the track, andthis track is parallel with the. Cplatform' of the weighing scalesandlocate directly above the same. Mountedon the carrier ,andoverhangingthe platform isa sewing headv which .is positioned so thatpasthe'ca'rrier moves in one direction the sewing head will stitch. a

straight line'oif stitching I across the .mouth of thebag; afterwhichthe sewing headmay be returned to normal. starting position.

part be hereinafter more 65 In carrying out the invention, I prefer to,7 use a mo ified form of structure for weighing'scales whichinclude'sasupporting base 80 c v e 95 -upper ends of these standards are"brackets Associated with this track is an auxiliary track or support,and the carrier is provided with means for engaging the auxiliary trackfor the purpose of preventing the carrier from swinging or tilting onits track. Extending rearwardly from the carrier is a bracket on which amotor is supported, and this motor has a suitable belt connection withthe sewing head. As a means for driving the carrier back and forth, Ihave provided a threaded shaft which is secured to the brackets carriedby the standards.

This threaded shaft is stationary. A threaded isleeve engages said shaftand is connected to aforked arm mounted on the carrier so that anyendwise movement of the sleeve will i move the carrier, but theconnection does notinterfere with the rotating of the sleeve. Thissleeve is provided with a pulley at each end thereof.

In line with the motor shaft is a suitable support carrying a clutchmechanism and ends of this sleeve.

'rection when the other pulley is connected up to the motor shaft, Theseclutch members referredto above, are all controlled by a singleoperating lever. There is a bar extending from one bracket to the otherwhich is eccentrically mounted or cam-shape in cross section. This baris connected up to a l j, suitable treadle so that it may be oscillated.

A roller on the end of the clutch controlling lever is adapted to bemoved by this cam member so as to cause this clutch controlling lever toconnect the motor to the sewing head for running the same; also toconnect the motor to the sleeve for turning the sleeve so that thecarrier will be fed forward in proper direction for stitching the bag,and through this samelever, themotor may be connected to the otherpulley for turning the sleeve to bring the sewinghead back tonormalposi- .tion. Means is provided also on this cam bar for throwingout the clutches when the carrier has returned to starting position.

Referring more in detail to the drawings, the invention comprises asupportlng base structure 1 which is mounted on suitable casters orrollers 2,2. There are preferably four of these rollers, and this makesthe machine readily portable from one position in a mill to another. Thesupporting, base is provided with rearwardly projecting upturned members3, 3, one at each side thereof.

other locking means.

Mounted in this supporting base is a suitable scale mechanism of theusual construction, 7

with a platform at above and forming the upper surface of the basestructure.

Mounted on the rearwardly projecting members 3, 3 are two standards 8,8, one on each projecting member, and these standards are connected attheir upper ends by a cross plate 7 which performs the function of thesupporting arm of the usual form of scales. A scale beam 6 is mounted onthe under face of this plate 7 and is connected by a rod 5 with themechanism supporting the platform 4: of the scales. This rod 5 ispreferably enclosed by a tube 5.

The standards 8, 8 are each formed with an upper section 14, which uppersection in each case is threaded. These threaded por tions of the upperstandards telescope into the lower portions of the standards and areeach supported by a threaded nut 13 which rests on the upper face of theplate 7. These threaded nuts serve to support the upper sectionsof thestandards, and when they are turned they will raise and lower the upperparts of the standards. As a ready means for rotating the nuts, I haveprovided a cross shaft 16 which is mounted in bearings 17, 17 carried bythe end of the plate 7 and this shaft is provided with worm gears 15,one for each nut, which engage the gears on the nuts. The shaft iscapable of being rotated by a hand wheel 18 which is readily accessibleto the operator, and when the shaft is turned in one direction, theupper parts of the standards will be lifted from the lower parts, andwhen rotated in the other direction, the upper parts will be loweredinto the lower sections. These threaded nuts will serve to hold thestandards in adjusted positions without any Mounted at the upper end ofeach standard is a bracket 19. Each bracket 19 has a forwardlyprojecting bracket arm 20, and

,inounted on these arms is a track 21 which is in the form of an anglebar bolted to the arms 20 by suitable bolts, and this track or railextends all the way across the machine as clearly shown in Fig. 1 of thedrawlngs. Said bracket 19 is also provided with 'a-rearwardly andupwardly projecting arm 35, and mounted on these arms 85, 35 is a guidebar 34, which 1n a sense, is an auxiliary track or rail as will appearhereinafter. This guide bar 3e extends from one bracket to the other,but does not project beyond the sides of the bracket.

A carrier 26 is mounted to travel back and forth on the rail or trackand is held from tilting 'by means of the guide bar. Said carrierconsists of a main frame portion which is provided with extensions 25,25,

and pivotally supported on each extension is a wheel or roller 22. Theserollers 22 are adapted to run on the track or rail 21.

It will be noted that one roller is at the right of the main frameof'the carrier as viptwed in Fig. 2, while theother is at the le Thesewing head 27 is adapted to be mounted on this carrier and is securedthereto at a point midway between the rollers 25, 25. The carrier has anupstanding member to which the base of the sewing head is bolted bymeans of a stud and nut 28. This stud passes through the upstandingmember of the carrier frame and the sewing head may be adjusted nearerto or farther from the center of the carrier by means of blocks 29 whichmay be of different thicknesses. This block is inserted between theupstanding member of the frame and the base of the sewing head. The studpasses through the block and the upstanding member and will clamp thesewing head firmly against this block.

The carrier also has a rearwardly and laterally projecting bracket arm31 on which a motor 30 is mounted so that the sewing head and the motorare both mounted on the same carrier. It. will be noted from Fig. 3 thatthe sewing head is in front of the supporting rail21 which carries theweight of all the parts that are mountedon the carrier, and said sewinghead overhangs the platform 4 of the scales. The rail is also parallelwith the center line throughthe platform, so that as the sewing headruns along the track or supporting rail, a straight line of stitchingcan be formed in the mouth of the bag which is resting on the platformof the scales. The bracket arm 31 has a depending plate on which rollers33, 33 are mounted, and these rollers are adapted to engage one aboveand the other below the guide bar ,34. The pur ose of these rollers 33is to keep the carrier rom tilting on the rail 21. While the weight ofthe movable parts is fairly equally distributed on opposite sides ofthis supporting rail 21, the guide bar, however, is essential in ordertokeep the carrierfrom swinging laterally on the supporting track orrail and maintain the sewing head in the same vertical position asittravels back and forth across the platform of the. scales.

Theflmotor 30 is provided with a motor shaft 40, and this motor shaft.40 is extended some distance beyond the end of the motor are used fordriving the carrier back and forth, and the pulley 43 which is connectedand 51 for driving the carrierback and forth.

There is a threaded rodor shaft which is mounted in bearings 76, 7 6carried at the upper ends of thestandards, respectively, so that thesethreaded rods extend from one standard to the other and are rigidlyheldby suitable set screws. Onthis threaded rod intermediate the endsthereof is a threaded sleeve or nut71. At one end of said sleeve or nutis a pulley 72, and at the other end thereof is a pulley .72. Thesepulleys are rigid with the threaded sleeve or nut and serve as a meansfor rotating the nut in'one direction orthe other.- Mounted ongthecarrier is a rearwardly projecting arm 7 7 which is forked and engages areduced portion centrally of the sleeve or nut. This forked end does notin anyway interfere with the rotating of the nut, but any endwisemovement of the nut will be imparted to the arm 77, and through the arm7 7 to thecarrier.

A straight belt 73 connects the pulley51 with the pulle'y72, while acrossed belt 74 connects the pulley 45 with the pulley 72.

WVhen the pulley 51 is connectedito the motor shaft, the threadedsleeve-or nut will be driven in a direction for returning the carrier toits starting position which is at the left-hand of the machine "asviewed in Fig.

1. WVhen the pulley 45 is connected to the threaded nut then it will bedriven in the opposite direction and will cause the carrier and sewinghead-to travel from left to right along the track or rail, and atthesame time, the pulley 45 will operate the stitching mechanism, and thiswill'stitch the mouth of the bag.

Coming backagain tothe clutch members,

it will be notedthat the pulleys 43 and.45 are loosely mounted on thebushing 41. There is'a clutch facing ofleather or other suitablematerial 44 between these two'pulleys 43 and 45. There is a similarfacing 46 on the other side of the pulley 45. The pulley 51 has arecessed portion on one face thereof which is cone-shaped and adapted tocooperate with a friction con'e member 47. A coiled spring 48 is locatedbetween the end of the bushing 41 and the adjacent face ofthe clutchmember 47 and'tends to disengage the flat face of the clutch member 47from the clutchingface 46 on the pulley-45. The clutch member 47 issecured to the motor shaft by means of a key 49 which is mounted in aslot extending through-the motor shaft 40: In the outer end of the motorshaft there is a pin 50 which bears against the key. It understood thatthe key is fixed to the clutch member 47. When thisv pin 50 is pressedto the right as viewed in Fig. 5, it will contact with the key, andthrough the key, move the clutch member 47 so as to compress the spring48 and cause said clutch member 47 to contact with the pulley and thepulley 45 in turn to contact with the pulley 43, and thus it is that thetwo pulleys 43 and 45 will be driven from the motor-shaft. hen the pin50 is released, then the spring 48 will move this clutch member 47 inthe opposite direction, releasing the two pulleys 45 and 43, and saidmember 47 will clutch up with the pulley 51 and drive the pulley 51. Ashas already been noted, the two pulleys 45 and 43 operate respectivelythe carrier and the sewing head so that the sewing head is fed alongwith the stitching of the mouth of the bag. then the bag has beenstitched then these two pulleys are re leased from the motor shaft, andthe pulley 51 is connected thereto for returning the carrier and thesewing head to its initial starting position.

As a means for controlling the clutch members at will, I have provided aclutch shifting lever 53 which is pivoted at 54 to the bracket 36. Thislever 53 is provided with a screw 52 which is adapted to Contact withthe pin 50above described. The screw 52 is adjustable and can be securedin adjusted positions. When the lever 53 is turned in one direction, itwill push on the pin to clutch up certain of the pulleys to the motorshaft, and when released, it will allow the pin 50 to move inthe otherdirection, and the spring 48 to cause the pulley 51 to be connected tothe motor shaft.

On the outerend of the lever 53 there is a roller 55 which is adaptedto'cooperate with a cam bar 56. This cam bar 56 is mounted in bearingsat the upper ends of the bracket arms 35. This cam bar is eccentricallymounted on these hearings so that when said. cam bar is rotated in onedirection, it will press outwardly on the roller 55 and swing the arm 53to the right as viewed in Fig. 4. Said cam bar has a radially extendingarm at the right-hand end thereof on which is mounted a counter weight70 which tends to hold the cam bar 56 in a certain predeterminedposition. In other words, the cam bar is moved by means of a treadle foroperating the clutch parts, and when the cam bar is released, then thiscounter weight returns it, so as to cause the lever 53 to be released. 7

On the opposite end of the cam bar from the counter weight there is anarm 58 which depends from the clutch bar. Said arm has its lower endformed to engage an arm 59. The arm 59 has an opening which isrectangular in shape and adapted to loosely lit a rod 60 which isrectangular in cross section. The arm 59 has a projecting sleeve whichis mounted in a bracket 61 carried by the bracket 19 which moves up anddown with one of the upper portions of the standards. The purpose ofthis connection-of the arm 59-;toj the arm 61 is so that when thebracketon which the carrier is mounted, is raised, the connection with the rodwill be raised, and when the bracket is lowered, this connection will belowered. Thus it is thatthe tarricrinay be raised and lowered and setindifferent positions without disturbing the connection with the rod 60.The rod 60 .at its lower end carries an (1111164 which is forked toengage the upper end of an arm 65 rigidly connected with a shaft 66.This shaft 66 e tends from the rear to the front of the machine and ismounted in suitable bearings 68 carried by the supporting base. On theend of the shaft 66 there is a treadle69, which serves as a means foroscillating this treadle shaft, and when the treadle shaft isoscillated, the same oscillates the arm 64 and in turn oscillates therod60.

hen it is desired to start the machine, the operator depresses thetreadle 69 and this through the connections just described, will rotatethe cam bar 56 so astoswing the lever 53 and cause the pulleys 45 and 43to be clutched up to the motor shaft. One of these pulleys will. rotatethe threaded sleeve 71 which will cause the carrier to move from left toright as viewed in Fig. 1, and vwhenthe clutch is released, the counterweight will swing the cam bar so as torelease the clutch lever andpermit the spring 48 to release the clutch pulleys 45 and 43 and connectthe pullev 51 to the motor shaft so that the machine will be driven inthe opposite direction.

The machine moves in said opposite direction until it reaches itsinitialstarting potion, at which time the block 78 having the inclinedforward end engages the roller 55 on the lever 53 and moves the lever 53a sufficient distance to disengage the pulley on the motor shaft whichisrotating the nut or sleeve for moving the carrier. The lever, however,is not moved a sufiicient distance to connect up the other pulley whichdrives the sleeve or nut for moving the carrier forward. In other words,the clutch parts are in inoperative position, all of them disconnectedfrom any actuating members, and the machine :will

come to rest.

In order to aid in stitching smaller bags, an auxiliary platform 9 isprovided. This platform is pivotally attached to the standards orcolumns 8 by adjustable clamping coll'ars 10. When this auxiliary,platfornr is not in use, for supporting a bag, it ha'ngs downwardlyfrom. the clamped collars 10 and serves as a back board to-v prevent thebags from falling back between the standards or columns or frominterfering with the scale beam 6. When it is desired to stitch a smallbag which is too short as to height to reach from the platform ofthemain scales to a point within rangeof the traveling sewing head whenin itse rtreme lower position,

the auxiliary platform is raised to horizontal position and is held inthis position by braces 12 which are connected at one end to anextension 10' on the clamping collar 10 and at the other end to a lug 12on the lower side of the platform 9. It is obvious that the smallerscale can be placed on this auxiliary platform andthe bag placed .on theplatform of the smaller scale and then weighed and stitched.

It is not thought necessary to describe the operation in any greatdetail, as it is obvious from the description which has already beengiven. The filled bag is placed on the weighing scales and weighed. Theoperator then depresses the treadle at the left of the machine, whichcauses the threaded sleeve or nut to be clutched up to the motor so asto rotate the sleeve in a direction for moving the carriage toward thebag on the scales. The sewing head is likewise clutched up to the motorand will at once begin its operation. In other words, both the sewinghead and-the carrier are set into operation at the same time, and whenthe sewing'head reaches the bag it will stitch. the bag.

After the machine has traveled across the mouth of the bag and stitchedthe same, the operator releases the treadle, and this releases both ofthe pulleys for driving the carrier forward and operating the stitchingmechanism. It also permits the spring associated with the clutch membersto clutch up the proper driving pulley for rotatingthe threaded sleeveor nut in the opposite direction, and thus it is that the, carrier ispositively fed backwardly, and during this backward feed of the carrier,the stitching mecha nism is, of course, idle. When thecarrier reachesthe initial starting position, the block .78 moves the lever 53 asufficient distance to disconnect the threaded sleeve or nut from themotor, leaving the parts in inactive or ineffective position. This block78 is adjustably connected to the bar on which it is supported and may,therefore, be set in different positions so as to disconnect thethreaded,

sleeve from the motor after the machine is moved back a sufficientdistanceto allow the placing of another bag to be stitched.

It will be noted that the sewing head overhangs the weighing. platform,and as it travels across the same, it will travel centrally across thefilled bag, and therefore, make a very efiicient and neat closing of thebag, by means of a straight line of stitching extending from.

the parts may be made without de arting from the spirit of the inventionasset orth in the appended claims. I Q I Having thus described theinvention, what I claim as new and desire to secure by Letters- Patent,is' a p 1. The combination of a supporting base structure, spacedstandards carried thereby, a weighing scale platform mounted on saidbase structure, a scale beam mounted on said standards and connected tosaid platform, said standards being extended above said scale beam, andmeans mounted on the stand; ards for-supporting'a sewing head so thatsaid sewing head can be moved across the platform of the weighing scalesfor stitching a filled bag supported on said platform.

2. The combination of asupporting base structure, spaced standardscarried thereby, a weighing scale platform mounted on said basestructure, a scale beam mounted on said standards and connected to saidplatform, said standards being extended above said scale beam, a trackmounted on said standards above the scale beam, a carrier movable backand forth on said track, a sewing head mounted on said carrier, saidtrack being so disposed relative, to said supporting base, that the sewing head mounted on the carrier will travel across the platform of theweighing scales and stitch a filled bag supported on said platform. r y

3. The combination of a supporting base structure, spaced standardscarried thereby, a weighing scale platform mountedon said basestructure, a scale beam mounted on said standards. and connected to saidplatform, said standards being extended, ,above said scale beam, a.track mounted on said standards above the scale beam, a carrier movableback and forth on said track, a sewing. head mount ed onsaid carrier,said track being so disposed relative to said supporting base that thesowing head mounted on the carrier will travel across the platform ofthe weighing. scales and stitch a filled bag supported on said platform,and means for positively moving said carrier back and forth on saidtrack,-

4. The combination of a supportingjbas'e structure, spaced standardscarried thereby, a

weighing scale platform mounted on saidbase structure, a scale beammounted on said standards and connected to said platform, saidstandardsbeing extended above said scale beam, a track carried by the standardsand located in a plane in front of the scale beam, a carriermovable-back andv forth on said track, and a sewing head mounted on thecarrier and depending in front of the track and disposed centrally ofthe weighing platform so that the sewing head travelingwith the carriermay stitch a filled bag supported on the weighing platform. 'I

5. The combination of a supporting base structure, spaced standardscarried thereby,

a weighing scale platform mounted on said base structure, a scale beammountedon said standards and connected to said platform, said standardsbeing extended above said scale beam, a track carried by the standardsand located in a plane in front of the scale beam, a carrier movableback and forth on said track, a sewing head mounted on the carrieranddepending in frontof the track and disposed centrally over theweighing platform so that the sewing head traveling with the carrier maystitch a filled bag supported on the weighing platform, said spacedstandards including devices whereby the track may be raised and loweredrelative to the platform of the scales. 6. The combination of asupporting base structure, spacedstandards carried thereby, a weighingscale platform mounted on said base structure, a scale beam mounted onsaid standards and connected to said platform, said standards beingextended above said scale beam, a trackmounted on said standards abovethe scale beam, a carrier movable back and forth on said track, a sewinghead mounted on said carrier, said track being so disposed relative tosaid supporting base that the sewing head mounted on the carrier willtravel across the platform of the weighing scales and stitch a filledbagsupportcd on said platform, said spaced standards including deviceswhereby the track may be raised and lowered relative to the platform ofthe scale.

7. The combination with a supporting base, standards carried by saidsupporting base and projecting upwardly therefrom, brackets on the-upperends of said standards having forwardly and rearwardly projecting members, a track carried by said forwardly projecting members, a secondtrack carried by said rearwardly projecting members, a carrier havinglaterally projecting members provided with rollers adapted to run onsaid track mounted on the forwardly projecting members of the bracket, asewing head mounted on said carrier, and an arm projecting rearwardlyfrom the carrier and having var-- tically spaced rollers adapted toengage the upper and lower faces of the'track carried by the rearwardlyprojecting members.

8. T he'combination with a supporting base, standards carried by saidsupporting base and projecting upwardly therefrom, brackets on the upperends of said standards having forwardly and rearwardly projectingmembers, a track carried by said forwardly projecting members, a secondtrack carried by said rearwardly projecting members, a carrier havinglaterally projecting members provided with rollers adapted to run onsaid track mounted on the forwardly projecting members of the bracket, asewing head mounted on said carrier in front of said forwardlyprojecting member and the track carried thereby,

an arm projecting rearwardlv from the carrier and having verticallyspaced rollers adapted to engage the upper and lower face. of the trackcarried. by the rearwardly projecting members, said carrier having arearwardly and laterally projecting bracket arm, and a motor mounted onsaid bracket arm and adapted to drive the sewing head.

9. The combination with a supporting base, standards carried by saidsupporting base and projecting upwardly therefrom, brackets on the upperends of said standards having forwardly and rearwardly projectingmembers, a track carried by said forwardly projecting members, a secondtrack carried by said rearwardly projecting members, a carrier havinglaterally projecting members provided with rollers adapted to run onsaid track mounted on the forwardly projecting members of the bracket, asewing head mounted on'said carrier, an arm projecting rearwardly fromthe carrier and having vertically spaced rollers adapted to engage theupper and lower faces of the track carried by the rearwardly projectingmembers, said carrier having a rearwardly and laterally projectingbracket arm, a motor mounted on said bracket arm and adapted to drivethe sewing head, a threaded rod extending from one standard to theother, a threaded sleeve mounted on said rod, a forked arm mounted onthe carrier and engaging the sleeve, and means under the corn trol. ofthe operator for rotating said sleeve in one direction or the other fromsaid motor for propelling the carrier back and forth.

10. The combination of spaced supporting standards, a track carried bysaid standards, a carrier adapted to move back and forth on said track,a sewing head mounted on said carrier and movable therewith, a motormounted on said carrier and movable therewith, a threaded rod connectingthe spaced standards, a sleeve on said threaded rod, said carrier beingconnected to said sleeve whereby the carrier moves back and forth withsaid sleeve, pulleys at the opposite ends of said sleeve, pulleysmounted in alinement with the shaft of the motor and normallydisconnected therefrom, one of said pulleys being con nected to a pulleyat one end of the sleeve by a straight belt, and-the other pulley beingconnected to the other pulley of the sleeve by a crossed belt, andclutch members adapted to connect one or the other of said pulleys inalinement with the motor shaft to said shaft, said clutch members beingcontrolled by the operator.

11. The combination ofspaced supporting standards, a track carried bysaid standards, a carrier adapted to move back and fortlron saidtrack, asewing head mounted on said carrier and movable therewith, a motormounted on said carrier and movable there with, a threaded rodconnecting the spaced standards, a sleeve on said threaded rod, saidcarrierbeing connected to said sleeve whereby the carrier moves back andforth with said sleeve, pulleys at the Opposite ends of said sleeve,pulleys mounted in alinement with the shaft of the motor and normallydisconnected therefrom, one of said pulleys being connected to a pulleyat one end of the sleeve by a straight belt and the other pulley beingconnected to theother pulley of the sleeve by a crossed belt, and clutchmembers adapted to connect one; or the other of said pulleys inalinement with the motor shaft to said shaft, said clutch members beingcontrolled by the operator, said control means including treadleoperated devices. r

12. The'combination of spaced supporting standards, a track carried bysaid standards, a carrier adaptedto move back and forthon said track, asewing head mounted on said carrier and movable therewith, a motormounted on said carrier and movable therewith, a threaded rod connectingthe spaced standards, a sleeve on said threaded rod, said carrier beingconnected to said sleeve whereby the carrier moves back and forth withsaid sleeve, pulleys at the opposite ends of said sleeve, pulleysmounted in alinement 'with the shaft of the motor and normallydisconnected therefrom, one of said pulleys being connected to a pulleyat one end of the sleeve by a straight belt, and the other pulley beingconnected to the other pulley of the sleeve by a crossed belt, andclutch members adapted to connect one or the other of said.

- pulleys in alinement with the motor shaft to said shaft, said clutchmembers being controlled by the operator, said spaced standardsincluding members adjustable relative to each other for raising andlowering the track, and a fixed support on which the bag rests while thesame is being stitched.

13. The combination of spaced supporting standards, a truck carried bysaid standards, a carrier adapted to move back and forth on said track,a sewing head mounted on said carrier and movable therewith, a motormounted on said carrier and movable therewith, a threaded rod connectingthe spaced standards, a sleeve onsaid threaded rod, said carrier beingconnected to said sleeve whereby the carrier moves back and forth withsaid sleeve, pulleys at the opposite ends of said sleeve, pulleysmounted in alinement with the shaft of the motor and normallydisconnected therefrom, one of said dpulleys being connected to a pulleyat one en of the sleeve by a straight belt, and the other pulley beingconnected to the other pulley of the sleeve by a crossed belt, clutchmembers adapted to connect one or the other of said pulleys in alinementwith the motor shaft to said shaft, said clutch members being controlledby the operator, said spaced standards including members adjustablerelative to each other for raising and lowering the track, and a fixedsupport on which the bag rests while the same is being stitched, saidtreadle operated devices including means whereby the motor may be raisedand lowered without disturbing the treadle connections. V

'14. In a filled bag sewing machine, the combination. of supportingstandards, a track carried thereby, a carrier adapted to move back andforth on said track, a sewing head mounted on said carrier, a motormounted on the carrier, a belt wheel connected" to said sewing head foractuating the same, a belt wheel connected to the carrier for moving thesame forward, treadle controlled means for simultaneously connectingsaid belt wheels with the motor shaft Where- .by the sewing head isconnected to'the motor atthe same time that the carrier is movedforward, and means for positively returning the carrier to initialstarting position when the treadle is released.

15. In a filled bag sewing machine, the combination of supportingstandards, a track carried thereby, a carrier adapted to move back andforth on said track, a sewing head mounted on said carrier, a motormounted on the carrier, a belt wheel connected to said sewing head foractuating the same, a belt wheel connected to the carrier for moving thesame forward, treadle controlled means for simultaneously connectingsaid belt wheels with the motor shaft whereby the sewing head isconnected to the motor at the same time that the carrier is movedforward, a belt wheel connected to the carrier for moving the same inthe opposite direction, and means for connecting said lastnamed beltwheel to the motor when the treadle is released. 7

16. A filled bag sewing machine including in combination, spacedstandards, a track car-' ried thereby, a carrier movable back and forthon the track, a motor mounted on the carrier, a platform located betweenthe standards, a shaft in alinement with the motor shaft, a belt wheelclosely mounted on said shaft and connected to the sewing head, a secondbelt wheelmounted on said shaft and connected to the carrier for movingsaid carrier in one direction, a third belt wheel mounted on said shaftand connected to the carrier for moving the carrier in the oppositedirection, treadle controlled means for simultaneously connecting thebelt wheel for driving the sewing head and for moving the carrierforward to the motor shaft, and means for connecting the belt wheel formoving the carrier in the opposite direction to the motor shaft whilethe treadle is released.

17. A filled bag sewing machine including in combination, supportingstandards, a main track rail carried thereby, a carrier, a sewing headmounted on said carrier in front of said track rail, a motor mounted onsaid carrier in rear of said track rail, actuating devices operated bythe motor for actuating the sewing head and for moving the carrier alongthe rail, said sewing head, motor and actuating devices being so locatedrelative to the track rail that the parts in rear of the track railsubstantially counterbalance the sewing head in front of the traelrrail,Wheels mounted on the carrier and running on said track rail, anauxiliary track rail carried by said standards in rear of said maintrack rail, and devices mounted on the carrier and disposed above andbelow said auxiliary track rail for preventing the carrier from tiltingon its tracks, g

18. A filled bag sewing machine including in combination, supportingstandards, tracks mounted on saidstandards, a carrier adapted to moveback and forth on said tracks, a sewing head mounted on said carrier,means for moving said carrier along the tracks for stitching the mouthof the filled bag, and means for positively returning the sewing head toinitial starting position after the bag has been closed. V

19. A filled bag sewing machine including in combination, supportingstandards, tracks mounted on said standards, a carrier adapted to moveback and forth on said tracks, a sewing head mounted on said carrier,means for moving said carrier along the tracks for stitching the mouthof a filled bag,-means for positively returning the sewing head toinitial starting position after the bag has been closed, and devices fordisengaging the carriage moving means from the source of power when theinitial starting position is reached.

In testimony whereof, I afiix my signature.

NORMAN V. CHRISTENSEN.

